super关键字学习-2-super（实参）的用法

标签：keyword   int   test   关键字   count   and   new   super关键字   学习   

package superkeyword;
/*
*   举个例子：在恰当的时间使用：super（实际参数列表）；
* */

//测试程序
public class SuperTest03 {
    public static void main(String[] args) {
        CreditAccount ca1 = new CreditAccount();
        System.out.println(ca1.getActno() + "," + ca1.getBalance() + "," + ca1.getCredit());
        CreditAccount ca2 = new CreditAccount("1111",10000.0,0.999);
        System.out.println(ca2.getActno() + "," + ca2.getBalance() + "," + ca2.getCredit());

    }
}

//账户
class Account{
    //属性
    private String actno;
    private double balance;

    //构造方法
    public Account(){

    }
    public Account(String actno,double balance){
        this.actno = actno;
        this.balance = balance;
    }

    //setter and getter

    public String getActno() {
        return actno;
    }

    public void setActno(String actno) {
        this.actno = actno;
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        this.balance = balance;
    }
}

//信用账户
class CreditAccount extends Account{

    //属性：信誉度（诚信值）
    //子类特有的一个特征，父类没有
    private double credit;

    //构造方法
    //分析一下程序是否存在编译错误？？？？？
    public CreditAccount(String actno,double balance,double credit){
        //私有的属性，只能在本类中访问。
        /*this.actno = actno;
        this.balance = credit;*/
        super(actno,balance);
        this.credit = credit;
    }
    public CreditAccount(){

    }

    //setter and getter方法

    public double getCredit() {
        return credit;
    }

    public void setCredit(double credit) {
        this.credit = credit;
    }
}

super关键字学习-2-super（实参）的用法

标签：keyword   int   test   关键字   count   and   new   super关键字   学习   

原文地址：https://www.cnblogs.com/DcWzc/p/14305214.html